str = "写这段代码的人是无节操的lalala123" def cut(string,max) #当然内置到String类里面也可以 array=string.split("//u") save = "" array.each_with_index{|str,i|save += i%max==max-1 ? str+"\n" : str} end print cut(str,5) #=>写这段代码 的人是无节 操的lal ala12 3
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